general john allen-- the top u.s. and nato commander in afghanistan is back in kabul today to resume his duties. he'd been in washington to testify before congress when he became embroiled in the scandal of david petraeus. allen is now under investigation by the pentagon for potentially inappropriate emails with a woman linked to the scandal. allen will continue his duties in afghanistan during the probe, while his nomination for commander of u.s. european command and top nato general remains on hold. india has executed the last surviving attacker from the 2008 terror attack that killed 166 people. mohammed ajmal kasab was hanged in secret early today at a jail in pune. public celebrations broke out across the country as news spread of his execution. kasab was part of a pakistani- based squad of militants who carried out the three-day-long siege on india's financial capital. they targeted key sites like luxury hotels and a jewish center. newly released documents show a government agency took 684 days to warn of earlie